44138653 has 16 divisors (see below), whose sum is σ = 50662080. Its totient is φ = 38116224.

The previous prime is 44138639. The next prime is 44138671. The reversal of 44138653 is 35683144.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 44138653 - 2¹³ = 44130461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44138603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19425 + ... + 21577.

It is an arithmetic number, because the mean of its divisors is an integer number (3166380).

Almost surely, 2^44138653 is an apocalyptic number.

It is an amenable number.

44138653 is a deficient number, since it is larger than the sum of its proper divisors (6523427).

44138653 is a wasteful number, since it uses less digits than its factorization.

44138653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268.

The product of its digits is 34560, while the sum is 34.

The square root of 44138653 is about 6643.6927231774. The cubic root of 44138653 is about 353.4052730185.

The spelling of 44138653 in words is "forty-four million, one hundred thirty-eight thousand, six hundred fifty-three".